P0307 and blue smoke from exhaust

[Dubwatson86]

My 2014 Silverado 1500 LT is throwing p0307 codes. I replaced all plugs, wires and coils, my pcv valve, 2 lifters and still throws the code. It says my fuel is too rich and when I accelerate from a red light the blue smoke is so thick you can't see the car behind me. With a strong fuel smell. Smoke only from the left exhaust pipe. ( I'm running straights, co catalytic converters. 

[CamGTP]

I'd check compression on that cylinder and do a leak down test.

 

If that checks out, then you have a bad injector is my guess.

[Dubwatson86]

Ok thanks. I'll do that tomorrow. Unfortunately I'm not mechanically inclined. I'm a Google/YouTube mechanic and have very little clue what I'm doing.